Configuring a Port as an Edge Port and BPDU Filter Port
Context
If a designated port is located at the edge of a network and is directly connected to terminal devices, this port is called an edge port.
An edge port does not receive or process configuration BPDUs and does not participate in MSTP calculation. It can transit from Disable to Forwarding without any delay.
After a designated port is configured as an edge port, the port can still send BPDUs. Then BPDUs are sent to other networks, causing flapping on other networks. To prevent a port from processing and sending BPDUs, after configuring the port as an edge port, configure it as a BPDU filter port.
After all ports are configured as edge ports and BPDU filter ports in the system view, the ports do not send BPDUs or negotiate the STP status with directly connected ports on the peer device. All ports are in Forwarding state, which may cause loops on the network and lead to broadcast storms. Exercise caution when you configure a port as an edge port and BPDU filter port.
After a port is configured as an edge port and BPDU filter port in the interface view, the port does not process or send BPDUs. The port cannot negotiate the STP status with the directly connected port on the peer device. Exercise caution when you configure a port as an edge port and BPDU filter port.